AirHint found the following cheapest return flights from Frankfurt (FRA) to Keflavik (KEF) in March 2026 (see full year).

Return flights

02 Mar - 09 Mar	Ryanair
13 Mar - 23 Mar	Ryanair
06 Mar - 13 Mar	Ryanair
14 Mar - 23 Mar	Ryanair
02 Mar - 05 Mar	Ryanair
06 Mar - 14 Mar	Ryanair
15 Mar - 23 Mar	Ryanair
09 Mar - 15 Mar	Ryanair
16 Mar - 30 Mar	Ryanair
21 Mar - 04 Apr	Ryanair
13 Mar - 22 Mar	Ryanair
28 Mar - 11 Apr	Lufthansa
30 Mar - 13 Apr	Wizz Air Malta
21 Mar - 04 Apr	Icelandair	direct
25 Mar - 03 Apr	Icelandair	direct
25 Mar - 04 Apr	Icelandair	direct
26 Mar - 03 Apr	Icelandair	direct
26 Mar - 04 Apr	Icelandair	direct
30 Mar - 13 Apr	Icelandair	direct
27 Mar - 03 Apr	Icelandair	direct

Also check the deals for one-way flights from Frankfurt to Keflavik in March.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

Book a cheap hotel in Keflavik

Cheap car rent in Keflavik

Cheapest return flights from Frankfurt to Keflavik in March from $238

Return flights